[Interest] Alternative way to make photo viewer application for mobile platform

[Rutledge Shawn]

On 27 Feb 2015, at 06:08, Ben Lau <xbenlau at gmail.com> wrote:

> Hi all,
> 
> I am making a mobile application for iOS and Android that will provide a photo viewer. Just like other photo viewer did, it need to support flicking (with physical simulation) and pinching for zoom-in and out. I use Flickable + PInchArea to implement the features. However, it is not quite working in Qt 5.4. Flicking is ok , but pinching area do not work as expected. It is not sensitive for two fingers touch. The most successful way to get it works is to put the fingers on the screen at the SAME time. User will not accept the behaviour.
> 
> I have already report the bug with example project provided:
> [QTBUG-44645] Flickable and PinchArea are not working well together - Qt Bug Tracker
> 
> Anyway , I am not reporting for the bug here. Instead I would like to seek for alternative method to implement the feature (e.g not using pinch area? ). Downgrade to 5.3.2 may not work for me , I have few components that need 5.4 feature (e.g the native control for Android)..
> 
> Any suggestions are highly welcome.

Did you try the photosurface example?

It’s getting some new features in 5.5, because pinch zooming and flicking will both work better on OS X than they have in the past, with a trackpad.  Of course it’s not a typical gallery app for mobile devices, but it does involve using pinching and flicking together.